What is hidden in 3D image?

On August 16th, celebrate National (US) Tell A Joke Day by doing just that — telling a joke. Find some great jokes here:

What's the difference between an Indian and an African Elephant?
One of them is an elephant

What's the difference between Iron man and Iron woman?
One is a superhero the other an instruction!

How hard is it to seduce large women?
Piece of cake

There's a new religion that worships zero
Nothing is sacred these days

Did you hear about the two guys who broke into an oversized kitchen supply store?
One of them said to the other "Be careful, we're taking a really big whisk."

Am going to see that new film about the pig without an eye.
It's rated PG.

I ordered a book on puns.
I didn't get it.

I've just come back from the doctor and I've been diagnosed with tinnitus...
I don't like the sound of that!

I went to the doctors with hearing problems.
He said, "Can you describe the symptoms?"
I said, "Homer's a fat bloke and Marge has big blue hair!"

My dog ran off in the park last night.
I walked around for 30 minutes but could not find him.
The missus said I should look harder...
So I shaved my head and got a tattoo.
I still can't find him!

A Glaswegian lad takes his girlfriend home for the first time and introduces her to his parents.
"This is Amanda."
His dad jumps up and says, "It's a f*c*ng what?"